DocuSnap

DocuSnap Verified Seal

A tamper-proof QR code printed on certificates, letters and invoices. Scan it with any phone camera to see who issued the document and whether it has been changed.

How it works

  1. 1

    The issuer seals it

    The DocuSnap app signs the key details of the document with the issuer's private key and prints them as a QR code.

  2. 2

    You scan it

    Point your phone camera at the seal. This page checks the digital signature right on your device.

  3. 3

    You compare

    If the seal is valid, check the details and the Issuer ID match the paper and the issuer's published ID.

Get DocuSnap Paste QR text to verify

For the strongest check, scan with the DocuSnap app

No accounts, no tracking. Seal data never leaves your browser.